Riot, I have an important question: WHY?

I'm legitmately confused, you're just making all these sweeping kit changes and nerfing armour all at the same time, it's crazy. Why? I don't understand the benefits and it's beginning to feel like this is happening on a whim.

Why does Garen get everything nerfed and then gain true damage? Is %HP true damage the new point and click gap closer? Everyone's getting it.

Why does Darius get to dunk your entire team if he gets 5 stacks on a single player?

Why does Skarner give gold to the enemy team for free?

Why is Morde being straight up nerfed in a solo lane to try to force him to go bottom lane, when no one will do this, and even if it does work, the nature of him gaining levels much faster and being able to use dragon to snowball will make him insanely oppressive. Like, win lane, take drag-->beat up enemy laner with drag. Why?

Why completely remove Azir's knock up, give Fiora %HP true damage, tear off GP's arm, and so forth? WHY? It's starting to feel like the answer is simply "because we felt like it". Meddler has explained some of what the armour changes are but he never explained why.

The majority of these changes leave me baffled as to how they could positively impact the game, and no one is trying to explain it, so can someone help?

Why are early game lane bullies being phased out? I'm so confused. Please, just explain the why for some of these changes?